From 53f81b92d74a606fc2bc7ecb89f2f4a51c8842cc Mon Sep 17 00:00:00 2001
From: lucasstarsz <andrewrcdey@gmail.com>
Date: Mon, 31 May 2021 17:03:09 -0400
Subject: [PATCH] (#23) Added pause, resume, and stop audio actions

---
 .../java/tech/fastj/systems/audio/Audio.java  | 34 ++++++---
 .../fastj/systems/audio/AudioManager.java     | 70 ++++++++++++++++---
 2 files changed, 85 insertions(+), 19 deletions(-)

diff --git a/src/main/java/tech/fastj/systems/audio/Audio.java b/src/main/java/tech/fastj/systems/audio/Audio.java
index 3fb20ae6..ca715b16 100644
--- a/src/main/java/tech/fastj/systems/audio/Audio.java
+++ b/src/main/java/tech/fastj/systems/audio/Audio.java
@@ -2,22 +2,23 @@
 
 import javax.sound.sampled.AudioInputStream;
 import javax.sound.sampled.Clip;
-import javax.sound.sampled.FloatControl;
-import java.net.URL;
 import java.nio.file.Path;
-import java.util.Arrays;
 import java.util.Objects;
+import java.util.concurrent.TimeUnit;
 
 public class Audio {
 
     /** Signifies that the audio should loop when it finishes playing. */
-    public static final int LoopWhenFinishedPlaying = -1;
+    public static final int ContinuousLoop = Clip.LOOP_CONTINUOUSLY;
 
     private final Clip clip;
     private final AudioInputStream audioInputStream;
     private final SimpleLineListener simpleLineListener;
+    private final Path audioPath;
 
     Audio(Path audioPath) {
+        this.audioPath = audioPath;
+
         clip = Objects.requireNonNull(AudioManager.newClip());
         audioInputStream = AudioManager.newAudioStream(audioPath);
 
@@ -29,13 +30,8 @@ public class Audio {
                 () -> {
                 },
                 () -> {
-                    clip.stop();
-                    clip.flush();
-                    clip.drain();
-                    clip.close();
                 }
         );
-
         clip.addLineListener(simpleLineListener);
     }
 
@@ -51,6 +47,10 @@ public SimpleLineListener getSimpleLineListener() {
         return simpleLineListener;
     }
 
+    public Path getAudioPath() {
+        return audioPath;
+    }
+
     public void setLoopPoints(int loopStart, int loopEnd) {
         clip.setLoopPoints(loopStart, loopEnd);
     }
@@ -63,11 +63,25 @@ public void play() {
         AudioManager.playAudio(this);
     }
 
+    public void pause() {
+        AudioManager.pauseAudio(this);
+    }
+
+    public void resume() {
+        AudioManager.resumeAudio(this);
+    }
+
+    public void stop() {
+        AudioManager.stopAudio(this);
+    }
+
     @Override
     public String toString() {
         return "Audio{" +
                 "clip=" + clip +
-                ", audioInputStream=" + audioInputStream +
+                ", audioPath=\"" + audioPath.toString() +
+                "\", audioInputStream=" + audioInputStream +
+                ", simpleLineListener=" + simpleLineListener +
                 '}';
     }
 }
diff --git a/src/main/java/tech/fastj/systems/audio/AudioManager.java b/src/main/java/tech/fastj/systems/audio/AudioManager.java
index 3c3ec029..4d14ad5e 100644
--- a/src/main/java/tech/fastj/systems/audio/AudioManager.java
+++ b/src/main/java/tech/fastj/systems/audio/AudioManager.java
@@ -10,7 +10,6 @@
 import javax.sound.sampled.LineUnavailableException;
 import javax.sound.sampled.UnsupportedAudioFileException;
 import java.io.IOException;
-import java.net.URL;
 import java.nio.file.Path;
 import java.util.HashMap;
 import java.util.Map;
@@ -37,6 +36,12 @@ public static void loadAudio(Path... audioPaths) {
         }
     }
 
+    public static void unloadAudio(Path... audioPaths) {
+        for (Path audioPath : audioPaths) {
+            AudioFiles.remove(audioPath.toString());
+        }
+    }
+
     public static Audio getAudio(Path audioPath) {
         return getAudio(audioPath.toString());
     }
@@ -45,6 +50,15 @@ public static Audio getAudio(String audioPath) {
         return AudioFiles.get(audioPath);
     }
 
+    public static void unloadAllAudio() {
+        AudioFiles.clear();
+    }
+
+    public static void stop() {
+        AudioPlayer.shutdownNow();
+        unloadAllAudio();
+    }
+
     static Clip newClip() {
         try {
             return AudioSystem.getClip();
@@ -68,20 +82,19 @@ static AudioInputStream newAudioStream(Path audioPath) {
 
             return null;
         }
-
-
-    }
-
-    public static void stop() {
-        AudioPlayer.shutdownNow();
     }
 
     static void playAudio(Audio audio) {
         AudioPlayer.execute(() -> {
             Clip clip = audio.getClip();
-            AudioInputStream audioInputStream = audio.getAudioInputStream();
+
+            if (clip.isOpen()) {
+                FastJEngine.warning("Tried to play audio file \"" + audio.getAudioPath().toString() + "\", but it was already open (and likely being used elsewhere.)");
+                return;
+            }
+
             try {
-                System.out.println("?");
+                AudioInputStream audioInputStream = audio.getAudioInputStream();
                 clip.open(audioInputStream);
                 clip.start();
             } catch (LineUnavailableException | IOException exception) {
@@ -89,4 +102,43 @@ static void playAudio(Audio audio) {
             }
         });
     }
+
+    static void pauseAudio(Audio audio) {
+        AudioPlayer.execute(() -> {
+            Clip clip = audio.getClip();
+
+            if (!clip.isOpen()) {
+                FastJEngine.warning("Tried to pause audio file \"" + audio.getAudioPath().toString() + "\", but it wasn't being played.");
+            } else {
+                clip.stop();
+            }
+        });
+    }
+
+    static void resumeAudio(Audio audio) {
+        AudioPlayer.execute(() -> {
+            Clip clip = audio.getClip();
+
+            if (!clip.isOpen()) {
+                FastJEngine.warning("Tried to resume audio file \"" + audio.getAudioPath().toString() + "\", but it wasn't being played.");
+            } else {
+                clip.start();
+            }
+        });
+    }
+
+    static void stopAudio(Audio audio) {
+        AudioPlayer.execute(() -> {
+            Clip clip = audio.getClip();
+
+            if (!clip.isOpen()) {
+                FastJEngine.warning("Tried to stop audio file \"" + audio.getAudioPath().toString() + "\", but it wasn't being played.");
+            } else {
+                clip.stop();
+                clip.flush();
+                clip.drain();
+                clip.close();
+            }
+        });
+    }
 }